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Finding the Fourth Proportional to 383,904, 529,754.31 and 247,943.88

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Solution

The fourth proportional to 383,904, 529,754.31 and 247,943.88 is: 342,141.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,904 : 529,754.31 = 247,943.88 : x
  2. Step 2: Convert to fraction form
    383,904/529,754.31 = 247,943.88/x
  3. Step 3: Cross multiply
    383,904x = 529,754.31 × 247,943.88
  4. Step 4: Simplify right side
    383,904x = 131,349,339,068.12
  5. Step 5: Solve for x
    x = 131,349,339,068.12/383,904
  6. Step 6: Final answer
    x = 342,141.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.